House Frustration!!

We have been ready to close on the house for a month and a half now!!
The kids have started at their new school. The house phone is disconnected. No, internet or cable. (I'm at the library right now.) 3/4 of our house is packed.
Why haven't we closed you ask. Well hold the surprise......one signature.
It seems as though Fannie Mae is backed up with all the foreclosures.
We are also getting little help from the listing agent. He seems to have issues with forwarding on our addendum. So, here we wait, housing prices are still dropping. We had to cancel our appliance order because they couldn't hold any longer. Today I called our Realtor and said if something doesn't happen SOON we are going to walk. We will see what happens.